<!doctype html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <link rel="icon" type="image/svg+xml" href="/favicon.ico" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>图书管理系统</title>

        <style>
            .spinner {
                margin: 45vh auto;
                width: 50px;
                height: 60px;
                text-align: center;
                font-size: 10px;
            }

            .spinner > div {
                background-color: #89ba17;
                height: 100%;
                width: 6px;
                display: inline-block;
                -webkit-animation: stretchDelay 1.2s infinite ease-in-out;
                animation: stretchDelay 1.2s infinite ease-in-out;
            }

            .spinner .rect2 {
                -webkit-animation-delay: -1.1s;
                animation-delay: -1.1s;
            }

            .spinner .rect3 {
                -webkit-animation-delay: -1s;
                animation-delay: -1s;
            }

            .spinner .rect4 {
                -webkit-animation-delay: -0.9s;
                animation-delay: -0.9s;
            }

            .spinner .rect5 {
                -webkit-animation-delay: -0.8s;
                animation-delay: -0.8s;
            }

            @-webkit-keyframes stretchDelay {
                0%,
                40%,
                100% {
                    -webkit-transform: scaleY(0.4);
                }

                20% {
                    -webkit-transform: scaleY(1);
                }
            }

            @keyframes stretchDelay {
                0%,
                40%,
                100% {
                    transform: scaleY(0.4);
                    -webkit-transform: scaleY(0.4);
                }

                20% {
                    transform: scaleY(1);
                    -webkit-transform: scaleY(1);
                }
            }
        </style>
    </head>

    <body>
        <div id="app">
            <div class="spinner">
                <div class="rect1"></div>
                <div class="rect2"></div>
                <div class="rect3"></div>
                <div class="rect4"></div>
                <div class="rect5"></div>
            </div>
        </div>
        <script type="module" src="/src/main.ts"></script>
    </body>
</html>
